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Finding the Fourth Proportional to 29,045.80, 43,460.70 and 21,269.80

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Solution

The fourth proportional to 29,045.80, 43,460.70 and 21,269.80 is: 31,825.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,045.80 : 43,460.70 = 21,269.80 : x
  2. Step 2: Convert to fraction form
    29,045.80/43,460.70 = 21,269.80/x
  3. Step 3: Cross multiply
    29,045.80x = 43,460.70 × 21,269.80
  4. Step 4: Simplify right side
    29,045.80x = 924,400,396.86
  5. Step 5: Solve for x
    x = 924,400,396.86/29,045.80
  6. Step 6: Final answer
    x = 31,825.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.